mahon



.A. MAHON.

BROODER HEATER;

APPLICATION FILED 050.22. 1914.

1 1 9%,33fi. Patented Aug. 8, 1916.

2 SHEETS-SHEET l.

A. MAHON.

BROODER HEATER.

APPLICATION FILED DEC. 22, 1914' 1 1 94,338. Patented Aug. 8, 1916.

2 SHEETS-SHEET 2.

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ALEXANDER MAHON, 0F FAIRFAX, VIRGINIA,ASSIG1\TOR OF ONE-HALF TO JAMES P.COON, OF WASHINGTON, DISTRICT OF COLUMBIA.

BROODER-HEATER.

Specification of Letters Patent.

Patented Aug. 8, 11916.

Application filed December 22, 1914. Serial No. 878,510.

To all whom it may concern:

Be. it known that I, ALEXANDER MAHON, a citizen of the United States,residing at Fairfax, in the county of Fairfax and State of Virginia,have invented certain new and useful Improvements in Brooder-Heaters, ofwhich the following is a specification.

With respect to the present invention it may be premised that because ofthe danger of fire and the harmful efiect of gas fumes upon young chickswithin the hover chamber of a brooder that it is the common practice toplace the heater on the exterior of the brooder, thus minimizing thisdanger but with an accompanying loss of heat from radiation, and alackof uniform heating of all parts of the hover chamber as well asgreat variation in temperature and great difficulty and care in themaintenanceof a suitable temperature.

The object of this invention is to provide a heater for brooders which,by reason of its structure and location within the brooder, will notonly conserve and utilize all the heat produced, and therefore producean economy in the use of fuel, but also protect the hover chamber of thebrooder from the disastrous effects of fire, or the presence of gas inthe heater, render the heating of the brooder chamber uniform andpreserve a more constant temperature as well as to pro vide for easyaccess to the heating lamp and control of the heat produced.

Another object of the invention is to provide means for protecting theheater lamp from the explosive effects of the heat generated thereby andconfined in the heater.

A further object is to provide means for the raising and lowering of thechimney of the heater lamp from the exterior of the brooder soassociated with the heater as to preventthe communication of gases orfumes to the interior of the brooder. j

Primarily, the invention consists of a brooder heater adapted to belocated within a chamber below the hover chamber, and comprising a lampor other source of heat, a gas-tight casing for said lamp extending toand in open relation with the exterior of the brooder for theintroduction and withdrawal of the lamp, draft flues connected to saidcasing, a heating dome above said lamp forming a gas-tight part of saidcasing, a second dome surrounding said heating dome and extending withinthe hover chamber and pipes forming a communication between said chamberand the outer air and connected to the said second dome for theintroduction of fresh heated air to the hover chamber. 7

The invention also consists in certain other novel features in thearrangement and construction of parts by which ventilation and draft isprovided without undue waste of the heat, and in further means fordefleeting the heat from the lamp, and means for getting access theretothrough the protecting casing, all, as hereinafter set forth andclaimed.

In the accompanying drawings, Figure 1 is a view in perspective of asection of a brooder provided with the heater of the present inventionand partly broken away to disclose the heater which is shown partly indotted and partly in full lines, and is also broken away to disclosefully the interior thereof; Fig. 2 shows a portion of a brooder with theheater located therein, the brooder and heater being represented by avertical cross section taken longitudinally through the heater casing;Fig. 3 shows a vertical section taken transversely through the brooderand the heater at a point in front of the burner, a section only of thebrooder being shown; Fig. 4: is a detail view in perspective of thechimney and its associated heat guard and the means for raising andlowering the chimney and guard from the exterior of the brooder.

Referring to the drawing, the brooder 1 may be of any well known orpreferred construction, but is here represented as a rectangularstructure, the showing of the drawing being such as to so indicate thelocation of the heater therein that the burner and the heating domethereof will be central of the brooder. For the purposes of thisinvention the brooder is provided, in addition to the hover chamber 2,with an under-chamber 3 that is separated from the hover chamber by afloor 4. Within the under-chamber 3 is located the heater of theinvention, which in the main comprises a metal casing 5 in the form of arectangular box in one end of which is removably located a lamp-heater6, the casing having a width slightly larger than that of the lampheater so that the lamp heater may be readily inserted and withdrawnfrom the open end of the casing, Which end is closed by a ventilatingdoor 7,

' as shown in Fig. 1, the side walls of the cassaid opening is formed acollar 8 to receive one of the oppositely extending smoke or draft pipes9, which pipes extend beneath I the hover floor and through the oppositewalls of the brooder to the exterior air, and serve to lock the casingin its proper position. With the exception of the draft flues 9 and thefront opening of the casing, the said casing is gas-tight, and by reasonof the connection of these lines and their extension to the outer airand the extension of the open end of the casing to the exterior of thebrooder through an opening for that purpose, Which is closed by thecasing, the said casing is gas-tight and cannot communicate any gas orfumes to the hover chamber, or the chamber beneath the hover chamber,while by reason of this arrangement the said under-chamber is heated byradiation fro-m the casing and the flues, thus conserving all the heatunits and causing the uniform heating of the floor of the hover chamberby reason of the distribution of the radiated heat thereunder. As afurther means to conserve the heat produced the heater casing is sosupported within the under chamber as to bring its top in contact withthe floor of the hover chamber.

At the inner end of the casing, and directly over the lamp heater, thecasing is provided with an opening over which is secured by a gas-tightand fireproof union, a

heating dome 10, which is designed to ex-- tend into the hover chamber 2through a central opening in the floor 4. This heating dome ispreferably cylindrical and provided with a base flange 11 which isunited to the casing by means of clamping bolts 12 and a gasket 13 ofasbestos, or other fireproof material, that will not be destroyed ordisplaced by excessive heat, which gasket is clamped firmly between thefiangesll and the casing, thus making a heating extension which will beproof against the communication of fire or fumes that may be presentwithin the casing and permit of theremoval of'the dome for cleaning andother purposes and allow of its ready replacement without destroying itsfire and gas proof properties. The heater is also provided with a seconddome 14 slightly larger than the dome which surrounds the heating dome,and which is loosely supported on the top of the casing .and fits theopening in the floor of the'hover chamber through which the dome 10extends. The dome 14 is provided in its top with an opening 15 foregress of the heated air between the domes, this opening being centralof the hover chamber. In order that the heated air constantly suppliedto the hover chamber may be fresh air, intakes 16 are connected with thedome 14 near its base and extend below the hover floor to the outer air,thus introducing the fresh air and causing it to be in some measureheated in its passage to the dome 14 from the heat of the under-chamber3. At the ends of these pipes 16 a. plate 17 is secured having anopening therein to match the opening of the intake, and in this plate ismounted a suitable slide acting to open o1- close the intake to agreater or less degree and thus control the admission of the air andregulate the heat affected from this source. lVithin the casing isprovided a metal chimney 18 which extends within the heating dome 10 andis movable up and down therein. To conveniently elevate the chimney to apoint clear of this lamp, as required when removing or inserting thelamp, the chimney is provided with trunnions 19 by which it is pivotallyconnected to arms 20 rigidly connected to a rock-shaft 21, supportedfrom a hanger 22 that is removably secured to the top of the casing 5.Centrally of the shaft 21 is a rocker arm 23 to which is pivotallyconnected the operating slide-rod 24 extending to the casing openingwhere it may be readily operated from the exterior.

Secured to the chimney so as to be raised and lowered thereby is a plateor heat shield 25 having downturned guiding portions 26, which plate isof metal or other fire resisting material and acts to form a fire screenand heat guard that is useful when any excessive degree of heat ispresent that would endanger the lamp heater and cause explosion or fire.This heat guard is of form to substantially fit the casing below thedome or to impinge against the walls of the casing so as to guide andmaintain the chimney in its proper relation to the heating dome. Inaddition to the protective value of the shield 25 as above recited it ismade a 0011- server of heat by being provided with a covering 25 ofasbestos or other heat non-conducting material, so that at such timeswhen the heat is at alow degree its confinement to the upper part of theheater above the lamp will produce the desired temperature about theheating dome.

. From the foregoing it will be seen that a brooder heater is hereprovided that while conserving all the heat and properlydistributing itto the hover chamber with fresh heated air, also by reason of itsgas-tight construction and its connection for communication with theexterior of the brooder removes all danger of gas fumes and fire beingcommunicated to the hover chamber.

What I claim and desire to secure by Letters Patent is:

1. In a brooder, the combination of a hover chamber, formed with anopening in its floor near the center thereof, and a brooder heater, saidheater comprising a tunnel portion located below the floor of the hoverchamber and extending to the wall of the brooder into open relation tothe exterior thereof, and a dome, secured to the tunnel by a gas-tightand fire resisting connection and arranged to extend through saidopening into the hover chamber, said tunnel and dome being sealedagainst the accidental escape of products of combustion and other fumes,except where the tunnel is in open relation to the exterior of thebrooder.

2. In a brooder, the combination of a hover chamber, formed with anopening in its floor near the center thereof, and a brooder heater, saidheater comprising a tunnel portion located below the floor of the hoverchamber and extending to the Wall of the brooder into open relation tothe exterior thereof, and a dome arranged to extend through said openinginto the hover chamber removably secured to said tunnel by a gas tightand fire resisting connection.

3. In a brooder heater, the combination with a brooder having an upperhover chamber and a lower heating chamber, of a gastight casing Withinsaid heating chamber, having a dome at one end forming a gastight partof said casing and at its other end extending into open relation to theexterior of the brooder, smoke pipe or pipes connecting said casing withthe outer air, a source of heat located within said casing beneath thedome thereof, and a second dome surrounding the heating dome, having airsupply ducts, substantially as described.

4:- In a brooder heater, the combination with a brooder having an upperhover chamber and a lower heating chamber, of a gas-tight casing withinsaid heating cham ber, having a dome forming a gas-tight part of saidcasing and extending into the hover chamber, said casing extending inopen relation to the exterior of the brooder and closing the openingtherein for such extension against communication to the lower heatingchamber, a source of heat within said casing, and draft pipe or pipessimilarly extending to the exterior, whereby the source of heat isdisposed centrally of the brooder and gas and fire within the heaterprevented from being communicated to the interior of the brooder.

5. In a brooder heater, the combination with a brooder having an upperhover chamber and a lower heating chamber, of a gastight casing withinsaid heating chamber having a dome at one end forming a gas tight partof the casing, said casing extending in open relation to the exterior ofthe brooder, a source of heat within said casing beneath said dome,smoke pipe or pipes for said casing, a second dome surrounding theheating dome and supported on and closed at its base by the casing andextending into the hover chamber, said second dome having an outlet ator near its top and air supply pipes connecting said domewith the outera1r.

6. In a brooder heater, the combination with a brooder having an upperhover chamber and a lower heating chamber, of a source of heat disposedcentrally of the said heating chamber, a gas-tight casing for saidsource of heat, said casing having a heating dome forming a gas-tightpart of the same above the source of heat, a tunnel portion extending tothe exterior of the heating chamber for the passage of the source ofheat to and from its place within the casing, closing the heatingchamber against communication with the exterior, smoke pipe or pipes forsaid casing, a second dome surrounding the heating dome and supported atits base by the said casing, said second dome having air supply pipesconnected therewith and discharge outlets for conducting the heated airto the hover chamber.

In a brooder heater, the combination with a brooder having an upperhover chamber and a lower heating chamber, of a source of heat withinthe lower chamber, a gas-tight casing for said source of heat extendingin open relation to the exterior of the brooder and closing the openingtherefor through the brooder, and provided with a heating dome forming agas-tight part of said casing, extending Within the hover chamber, draftflues connecting said casing with the outer air, a second domesurrounding the heating dome, having fresh air supply pipes extendingthrough the heating chamber to the outer air and outlets for dischargingthe heated air into the hover chamber.

8. A brooder heater to be located within a chamber below the hoverchamber of a brooder, the same comprising a lamp or other source of heatdisposed centrally of said chamber, a gas-tight casing for said sourceof heat having a heating dome forn1- ing a part thereof and a tunnelportion extending to the exterior of the brooder for the passagetherethrough of the heating device within the casing, a chimney adaptedto be moved up and down within the heating dome, and mechanism withinthe casing for causing said movement and adapted to be operated from thetunnel opening at the exterior of the brooder.

9. A brooder heater comprising a gastight casing having a heating domeas a part thereof and an extension opening to the ex terior of thebrooder, a source of heat, a chimney to extend up into the dome, a rockshaft supported within said casing having an arm or arms carried therebyand pivotally connected to the chimney, an arm for rocking said shaft,and an operating rod connecting with said rocking arm and exber and alower heating chamber, of a source of heat, a gas-tight casing thereforextending from within said heating chamber into open relation with theexterior of the brooder to form a passageway for the source of heat,said casing having a separable heating dome forming a part of saidcasing, a heat resisting gasket interposed between the I base of thedome and the casing, and means for clamping the same between the casingand the base of the dome, substantially as described, whereby the entirecasing is rendered proof against the communication of fire and fumes tothe heating chamber of the brooder.

12. In a brooder heater, a casing having a dome, a removable lamp withinsaid casing and below said dome, a chimney extend ing into said dome andhaving a movable support independent of the lamp, whereby said chimneyis maintained in fixed working relation to said dome, and means foractuating said support for moving the chimney to and from the lamp topermit the withdrawal and replacement of the lamp.

13. In a brooder heater, a casing having a dome,'a removable lamp withinsaid casing below said dome, a chimney extending within said dome,adapted to be moved to and from said lamp, means for raising andlowering said chimney, and a heat shield connected to and movable withsaid chimney and being in guiding contact with the casing. I

In testimony whereof I afiix my signature in presence of two witnesses.

. ALEXANDER MAI-ION. Witnesses H. M sTERLING, J osnPH W. BUELL.

"Copies of this patent may be obtained for five cents each, byaddressing the Commissioner of Patents,

Washington, D. G.

